Evidence map›Paper›PMID 35246565›Full record

Trial reportScientific reports2022

Effect of low-level light therapy in patients with dry eye: a prospective, randomized, observer-masked trial.

Yuli Park, Hoon Kim, Sehwan Kim, Kyong Jin Cho

Open access · goldAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Scientific reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
8.0field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

17 citing papers in PubMed, 41 citations in OpenAlex.

  1. Observational
  2. Review
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  5. Effects of Lotilaner Ophthalmic Solution, 0.25% onClinical ophthalmology (Auckland, N.Z.) · 2026
    Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 2 institutions in 1 country.

Yuli ParkDepartment of Ophthalmology, Dankook University Hospital, College of Medicine, Dankook University, Cheonan, Republic of Korea.
Hoon KimDepartment of Ophthalmology, Dankook University Hospital, College of Medicine, Dankook University, Cheonan, Republic of Korea.
Sehwan KimDepartment of Biomedical Engineering, School of Medicine, Dankook University, Cheonan, Republic of Korea.
Kyong Jin ChoDepartment of Ophthalmology, Dankook University Hospital, College of Medicine, Dankook University, Cheonan, Republic of Korea. perfectcure@hanmail.net.
Dankook University Hospital · KRDankook University · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

To evaluate the efficacy of low-level light therapy (LLLT) with near-infrared light-emitting diodes (LED-LLLT) for the treatment of dry eye. 40 patients were randomly assigned with a 1:1 allocation ratio to receive LED-LLLT (LLLT group, n = 20) or placebo treatment (placebo group, n = 20). Patients in the LLLT group received LLLT twice a week for 3 weeks, for a total of 6 treatment sessions. The primary endpoint was the changes in the fluorescein corneal staining (FCS) score. The secondary endpoints were the changes in the ocular surface disease index (OSDI) score, lissamine green conjunctival staining (LGCS) scores, tear film break-up time (TBUT), Schirmer test, and the meibomian gland dysfunction (MGD) index. These were evaluated before treatment and 4 weeks after start of treatment. The mean difference of score change in primary endpoint revealed significant improvement in the LLLT group, compared to the placebo. Among secondary endpoints, LGCS, Schirmer's test, upper meibography scores showed significant improvements, while TBUT, lid debris, lid swelling, lid telangiectasia, meibomian gland secretion and expressibility scores had slight improvement without significant differences. No serious adverse events were observed. The use of LED-LLLT for the treatment of dry eye and MGD appears to be safe and beneficial.

Indexed as

Dry Eye SyndromesLow-Level Light TherapyMeibomian Gland DysfunctionHumansMeibomian GlandsProspective StudiesTears

Identifiers

PMID35246565
PMCPMC8897458
OpenAlexW4214899040

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.